Connecting-plitg



S. 1. LA MUNTAINE.

CDNNECTQNG PLUG.

APPLICATION HLED FEB. 1, 1919.

1,343,676. Patented June 15,1920.

[in v5 for PATENT OFFICE.

SIDNEY J. LA MONTAINE, OF CHICAGO, ILLINOIS.

CONNECTING-PLUG.

Application filed February 1. 1919.

To all whom it may concern:

Be it known that I, SIDNEY J. LA Mon TAINE, a citizen of the United States, residin at Chicago, in the county of Cook and State of Illinois, have invented certain newand useful Improvements in tlonnecting- Plugs, of which the following is a specification.

My invention relates to connecting plugs for connecting electrical translating devices with a source of electric current supply.

One of the objects of my invention 15 to generally improve devices of this character,

Another object of my invention is to pro vide a plug having relatively large heat radiating surfaces to disperse heat that may be imparted thereto from a thermoelectr c device to which the plug may be attached.

Another object is to prov de a lughav- 'mg conductors of relatively low e ectric resistance but large he'at rad at ng surfaces an'd,havin g" passage ways through the part of't'he plugto induce a ndra'ft throng the ,plug, contact with said conductors, to carry away the heat that nay' gmparted to the conductors by conduct om convect on or radiation,'so that the plug-may hemanny manipulated without et a the @P i :rators fingers, i v y Afurther feature of my invention resides lithe provision of a switchsof 'impr oved' switch inay be'easfly a 1 ,d convenientl 'ipp'erf A eri'nb-j 1 Other, fi'irther and more specific ob1ects )f my invention will become readily appar' ant, to persons skilled in the art, from acouiideration ofthe following description when ;aken in conjunction w th the drawings, vherein f t i Figure 1 is an elevation of one half of the W piece plug showing the interior pants hereof.

Fig. 2 is a section taken on line 2-2 of i 1.

ig. 3 is a transverse section taken on line -3 of F ig. 1.

Fig. 4 is a fragmentary section taken on no 4-4 of Fig. 1.

Specification of Letters Patent. Patented June 15, 1920,

Serial No. 274,413.

Fig. 5 is a transverse section tak 5 5' of Fig. 1- en on line I Fig. 6 is a section taken on line (5-6 of n all the views the same reference characters are employed to indicate similar parts.

The body part of the plug is composed of two members of insulating material 6 and 7, divided preferably along the line 8, and secured together by suitable means, such as by the screws 9 and 10. In the particular embodiment illustrated the interior of the plug is divided into five receptacles ll, 12, 13 14 and 15.

lteceptacles 11 and 12 contain like 5 rin clips 16, each composed of members 1 and 18. These clips confront the openings 11' and 12', respectively, in the body art of the plug through which round or fl at connect ng plugsj may be inserted to on age the members 17 and 18 of the clips. T he clips areheldflin place by a plate 20 having an oval like sleeve zllas an integral part/theresurrounds, the upper parts of membeis'mjorder to clamp the con ucting terminal 22 of the coil 25 therebetween. The

, edges of the-plates 20 are passed into grooves made 'ihthh bfoiindary walls of the recep tool 11 and 12, respectively.- The plate 20 is substantial lyl square in outline, so that the ieplate 20 may he'turned at ip 6 a id right angles, horn the positions: they I occupy in Pz'gfs. to accommodate terminals that may lie' so laced on translating devices,

such as fiatiron's or the like. By this means the cli SL161 may be made toenga'ge terminal glades'y on flat irons or. the like, in which blades their greater width is in the same plane or in planes at ri ht angles thereto, .or.1t' he clips are adapter? to receive substantially round plugs, and since the sleeve'21 isf'a little nearer one end of the plate 20, than the other, some adjustment may be made in the separation of the clips to accommodate themselves to flat iron terminals separated various distances apart.

Secured in the upper ends of the clips 16 are terminals 22 of coils of wire 25, with a relatively large surface with an attendant a I ate, with its e e, ff 'jah y d ven firmly u oil the low resistance in order that relatively large quantities of heat may be carried away by the air that will pass through the compartments 13 and 14 when the coils 25 are heated by the heat that is conducted through the clips 16 to the coils of wires, from the hot iron to which the clips are connected. Near the lower ends of the compartments l3 and 14 and in each of them, is an air admittin opening 20, and near the upper end of eac i of the compartments is an air exit opening 27. The relatively cool air will enter the openings 26 and contact the coils 25 and, due to the risin v temperature of the air it will pass througi the compartments l3 and 14 with considerable velocity and out of the upper opening 27 of the plug. The location of the upper openings is shown on Fig. l by the dotted lines 27, although it is to be understood that the upper openings extend through the portion 6 and not through the portion 7. This will be understood from a study of Fig. 2. The upper end of the heat radiating wires 25 are connected to sw'tch terminals 28, one on each side of the ug. The connections and parts all being Xuplicates in character, I shall only describe one set and apply the like reference letters to the other set. Another terminal of the switch 29 is prolonged into a part 30, which cooperates with a screw 31 for connecting the flexible wires 32 and 33 to the plug. The screw 34 holds the cli s 28, 29; and the wire 25 in contact; tie switch terminals 28 and 29 being separat by an infsulating washci lio. switch" ar'm '36 of insulating material is m'futed on a metal beafrin" Ion the screw 1 0." The switch arm carrie ea eithe'rend a, connecting blade 38, which connects the switch terminals or switch blades 28and 29, together, when the blade located between them. The switch bladesorjterminals 28 and 29 on the left harji itl efofFig. 1, are located at a higher altitude" than the like terminals on the so that they will be in roper'positi us to make electrical connectioijif withi' i'espective oscillating blade when the-swash arm 36 is oscillated.

ci'i'tefd iinmediately below the screw 10, the,

axis 'oflgthe switch arm 36, is an oscillating arm or;'cage39' havin one end'40 secured inanf oscil latable shit t. 41, and carrying a spring pressed button' 42" held yieldingly in contact with the under surface of the arm 36 by. the'spring 43. On the outer end of 'thdshaft 41 is a lever 44 which operates the switch. When this lever is turned the right,'*thearm or cage 39, is turned to the same position which moves the Switch arm 36 t0 the position shown in Fig. 1, with a quick snap action. when the button 42 is madeto pass a vertical plane in which the axis of the switch arm 36 is located. Now

An oscillating sleeve 37, which has l earlyin the art 1 when the lever 44 is moved to the left, with respect to Fig. I, then the button 42 will be again carried beyond the vertical plane containing the axis of the lever 36 and the switch will be quickly moved to circuit closing position, the switch blades 38 bein thereby moved into contact with the switc 1 blades 28 and 29, thereby closing the circuit between the service wires 32 and 33,

with the respective coils 25.

The upper end of the insulating body art of the plug is provided with an openmg 50 within which to insert the service wires 32 and 33. Near the mouth of the opening is an annular enlargement 51. Within the annular opening 51 I insert a conductor-protector, comprising a spirally coiled wire having relatively large convolutions 52 for insertion in the annular groove 51 and relatively smaller convolutions 53 to more closely encompass the wires 32 and 33, terminating in contact with an insulating block or button 54, around the lower end 55 of which the wires 53 are coiled. This provides a means to prevent sharp bending of the wires 32 and 33 and protects them in their association with the plug, and the larger convolutions 52 in the groove 51, provides a very convenient means for holding the coiled wire protector in place.

It will be apparent, to persons skilled in the art, from a consideration of the struc-. ture shown, that the parts are easily and quickly assembled,jbeing; inonepart ofthe'plug ody, after which tl e othe'r part is placdiinjfpo sition and the screws and 10 'arejpassiid 'throu h the two members oi the plug body, an held togetherby the re etitiyefniitsil' and 1 0.

The coils mayibegiiiadef of difi'eren't material without departing-from the invention. I believe that I am'the' first to interpose between the terminals of the service wires and the terminals, of the implement or heating device, an electrical "conductor so constructed heating .device 1 caching theterminals oftliesei'vice Iamaware that itwasftlo mmompracticein battery circuitsarid ,li'ke 'tocoilthe ends j offa'se'rvice wired lre'itfl is attached to a terminal. This,ligviv'eifer;"was for atotally different pur osefin that the coil was there to supply so cient sla ck stj that if thewire were broken off a new connection might be made, or if the terminal were to be moved, 7 there would be suliicient slack to permit such action: .While I have herein shown a single embodiment of my invention, for the purpose of clear disclosure, it is manifest'to persons skilled in the art, that many changes may be made in the 'eneral arrangement and configuration of the parts, within the scope of theappended claims.

laced in position Having described my invention, what I claim is'. I

l. A connecting plug comprising an insulating hollow body part having an air-draft passage-nay therethrough and a continuous electric conductor within the air path adapted to be cooled by the draft 111 said passageway 2. A connectin plug comprising two i11- sulating, separable members t: talning therebetween clip receptacles ha ng plate holdin grooves; clips in the receptacles, said clips comprising two like spring mem, hers, held together at one. end; a plate, carry ing a sleeve adapted to be forced *bver the ends of said members to hold said members together, and to engage a wire therehetwee n, said plates adapted to be retained in place in said grooves. 7

3. A connecting plug comprising two insulating, separable members containing therebetweeu a pair of clip receptacles, each having plate holding grooves; a pair of clips in each of the receptacles, said clips comprising two like spring members held together at one end; a substantially square plate, carrying a sleeve nearer one of its edges than another, said sleeve adapted to be forced over the ends of the respective clip members to hold said members to: gether, and in engagement with a wire therebetwecn; said plates adapted to be retained in place in the grooves of said receptacles whereby to separate the pairs of clips to a greater or less extent when the plates are changed in their positions in the grooves.

4. A. connecting plug having in combination two insulating separable members having therebetween two clip receiving recep tacles and two conductor receiving receptacles, the latter receptacles having openings in each end to permit passage of air therethrou l1.

5. g connecting plug having in combination a chamber; an enlarged relatively lowresistance, coiled conductor therein; a clip engaging'the lower ends of the conductor, said chamber having openings to induce air to pass therethrough to cool the conductor.

(3. A connecting plug having in combination two insulating separable members having therebetween two clip receiving receptacles; two conductor receiving receptacles thereabove, the latter receptacles having openings at each end to permit the passage of air therethrough and a switch receiving receptacle above the conductor receiving receptacle and separated therefrom.

7. A connecting plug for a heating'iron having in combination an insulating member provided with connecting clips near its lower ends and having conductor'containers,

said containers having air openings near their lower ends on the side farthest removed from the iron to which the plug is connected to receive relatively cool air and openings near their nppeicnds to permit the air to escape.

H. i\ connecting plug having intwnbination an insulating supporting member having connecting clips at one end and a switch at the other end; conductors connecting said clips and switch and means for dispersing the heat from said conductors.

t). A connecting plug having in combination an insulating supporting member having connecting clips at one end and a switch at the other end; cimductors intermediate the clip and switch and means associated with said supporting member to disperse the heat from said plug.

In. A connecting plug for heating appliances havin; in combination an insulating supporting member having connecting clips for attachment to said appliance and terminals for supply of electric current and a means for carrying current and dispersing heat located between said clips and terminals. i

11. A connecting plug comprising a body member, a conductor leading into said body member, a switch in said body member, a contact terminal at one end of the plug and an open coil of wire for lessening the transfer of heat from the contact terminal, said wire connecting the switch and the terminal.

12. A connecting plug including a body of insulation, a cord leading into the body, a contact terminal at one end of the plug and an open coil of wire of relatively low resistance connecting the contact terminal and the cord, said open coil of wire being out of contact with the walls of the plug.

13. In combination, an insulated conductor, a heating element and a bare conductor forming a circuitous path for the conduction of heat, said bare conductor forming an electrical connection between the heating element and the insulated conductor.

14. In combination, a plug member, a stranded conductor at one end of the member. a terminal clip adapted to engage the contact of a heating element at the other end, and a solid conductor in the plug member between the stranded conductor and the terminal clip, said solid conductor having means for reducing the transmission of heat between the clip and the stranded conductor.

15. In a conriecting plug. a body of insulating material, comprising a terminal portion and a portion adapted to be attached to a flexible conductor, said portions being joined by an integral portion of reduced cross section to retard the flow of heat from the one portion to the other.

16. A connecting plug comprising a bod of insulating material having contact at one end for making connection with a heating appliance and having means at the other end for attaching a suitable conductor, said plug having parts thereof with openings which reduce the cross section of the insulating material to retard the flow of heat from said one end to the other.

17. In a device of the class described, an insulated conductor, a heating element, and

a conductor between the insulated conductor and the heating element, said latter can ductor having a relativelfi large heat radiat- 10 i SIDNEY J. LA MONTAINE. 

